680870842144 has 12 divisors (see below), whose sum is σ = 1340464470534. Its totient is φ = 340435421056.

The previous prime is 680870842121. The next prime is 680870842151. The reversal of 680870842144 is 441248078086.

It can be written as a sum of positive squares in only one way, i.e., 678336726544 + 2534115600 = 823612^2 + 50340^2 .

It is a junction number, because it is equal to n+sod(n) for n = 680870842091 and 680870842100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10638606877 + ... + 10638606940.

Almost surely, 2^680870842144 is an apocalyptic number.

It is an amenable number.

680870842144 is a deficient number, since it is larger than the sum of its proper divisors (659593628390).

680870842144 is a wasteful number, since it uses less digits than its factorization.

680870842144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21277213827 (or 21277213819 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 52.

The spelling of 680870842144 in words is "six hundred eighty billion, eight hundred seventy million, eight hundred forty-two thousand, one hundred forty-four".